Footnotes

This work was presented in May 2009 at the Royal College of Ophthalmologists Annual Congress, Birmingham, UK, and presented in October 2009 at the joint American Academy of Ophthalmology and Pan-American Association of Ophthalmology Annual Meeting.

Funding Optimedica Corporation, Santa Barbara, USA.

Competing interests GRM is an employee of Optimedica Corporation. PES has received financial support from Optimedica Corporation.

Ethics approval This study was conducted with the approval of the Stockport Ethics Committee.

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.